package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 执行INSERT语句 向表中插入数据
 */
public class JDBCDemo2 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        System.out.println("与数据库建立链接");
        Statement statement = connection.createStatement();
        String sql = "INSERT INTO userinfo(username,password,nickname,age) " +
                     "VALUES('王克晶','123456','克晶',18)";
        /* int executeUpdate(String sql)
            专门用于执行DML语句的，返回值表示执行该SQL后影响了表中多少条记录
         */
        int num = statement.executeUpdate(sql);
        if(num > 0) {
            System.out.println("插入成功");
        }
        System.out.println(sql);
        connection.close();






    }
}
